baber/WOPTO huggingface dataset:
Patent GB-374549-A (GB)
Title: Improvements in centrifugal separators
IPC: B04B1/14
Filed: 1931-03-26
Abstract: 374,549. Centrifugal machines. FAWCETT, H. W., 3, Kent Road, Harrogate. March 26, 1931, No. 9271.. Addition to 355,366. [Class 23.] The centrifugal separator described in the parent Specification is modified by an arrangement which ensures that the sludge discharge apertures are never completely closed, and that only a part of the sludge discharged from each aperture enters the cup which controls the valve at the nozzle. The valve 2, Fig. 1, is pivotally mounted on the nozzle 3 screwed into the drum wall 1, and it leaves a small permanent opening 2c for sludge discharge which is deflected by a plate 16 into the cup 8 through the opening 9 in the bottom. When the empty drum rotates at the start of operations, the weight 13 carries the arm 10 outwards, and the arm engages the bell-crank lever 17 to open the valve 2 completely. As liquid is fed to the machine, sludge issues from the valve and part of it is deflected into the cup 8 until this is heavy enough to move outwards against the action of the weight 13. This movement closes the valve 2 except for the small permanent opening 2c. If this opening should be obstructed, the supply of sludge will be diminished; it will leak from the cup 8 until the weighted arm 10 moves outwards to open the valve 2 so that the obstructing sludge can be discharged. In the modification shown in Fig. 2, clean liquid is supplied through the pipe 26 with a branch pipe 27. When the sludge discharge nozzle is clear, the sludge from the deflector 16 prevents a free discharge of clean liquid from the pipe 26, so that some liquid passes through the branch 27 to the cup 8 which then moves to its outer position and moves the valve 2 to its part open position. If the valve opening becomes obstructed, the flow of sludge diminishes and less liquid flows to the cup 8 ; the valve 2 is then operated to clear the obstruction. In another modification a rotating vane wheel is arranged in front of the nozzle opening and in another modification a combination of sludge cups is employed.
Patent GB-580133-A (GB)
Title: Improvements in filters for oil or liquids
IPC: B01D29/15
Filed: 1944-05-15
Abstract: 580,133. Filters. TECALEMIT, Ltd., and LE CLAIR, C. C. S. May 15, 1944, No. 9287. [Class 46] A filtering element for use with liquids comprises a textile part consisting of at least one layer of finely-woven fabric on which is supported at least one layer of filtering-felt, the textile part being mounted upon and surrounding a rigid pervious hollow supporting frame. As shown, a layer 10 of filtering-felt surrounds a layer 14 of linen or other woven fabric, as for example, silk, artificial silk, or fine wire gauze which is arranged around a pervious frame 11. Reinforcing strips 12, 13 of felt are provided, which may be placed as shown outside the fabric 14, or alternatively between the fabric and the frame 11. The ends of the filtering material are held in cement or equivalent material 15, 16. The cement may also be applied to the frame 11 as described in Specification 580,132.
Patent GB-912088-A (GB)
Title: Improvements relating to self-locking screws or other externally screw-threaded elements
Inventor: KLEIN HANS-CHRISTOF
IPC: F16B35/00
Filed: 1959-03-18
Abstract: 912,088. Locking-screws. KELLERMANN, R. March 18, 1959, No. 9305/59. Class 89 (1). A self-locking screw comprises a shank 10 with screwed portions 11, 12 separated by a reduced-diameter part 13 and with the thread pitches axially off-set relatively to each other. The screw has an axial bore 14 extending from the end remote from head 9 through part 13, and may be used for adjusting valve clearance in an internal combustion chamber. In a modification, the screw is bored axially from the head and through part 13 and has an axial protuberance at the other of smaller diameter than the thread.
Patent GB-414464-A (GB)
Title: Improvements in and relating to adjustable chairs and settees
IPC: A47C1/032
Filed: 1933-03-28
Abstract: 414,464. Adjustable seats. SEARLE & SON, Ltd., H. J., and SEARLE, H. J., 70, Old Kent Road, London. March 28, 1933, No. 9361. [Class 52 (ii).] In an adjustable chair or settee the seat 4 and back 9 are narrower than the space between the sides or arms, and are articulated so as to be adjustable in unison to vary the angle of the back within limits, adjustment beyond one of the limits being arranged to disengage guiding elements, such as pins 10 on the back 9 and slots 11 on the fixed sides, so that the back and seat may be packed between the side members. The seat 4 slides on rails 5, and pins 8 on the lower part of the back 9 engage loosely in sockets 7 on the seat frame. The pins 10 on the back engage in slots 11 formed in plates attached to the side members, open ended horizontal parts of the slots allowing detachment of the back. In the form shown in Fig. 6, the slots 11 have the open ends at the bottom, and springs 14 are provided to draw the seat normally into a retracted position. The back is articulated to the seat by hooks 13 engaging pins 12.
Patent GB-526723-A (GB)
Title: Improvements in or relating to fuel injection arrangements for internal combustion engines
IPC: F02M47/02
Filed: 1939-03-25
Abstract: 526,723. Oil engines. KAMMER, G. S. March 25, 1939, No. 9422. [Class 7 (iii)] In a liquid-fuel injection system wherein the pressure in an accumulator 3 fed by a fuel pump acts on both sides of a fuel-injection valve 16, a distributer which periodically releases and restores the pressure on the closing side of the injection valves of the various cylinders comprises a cylindrical member 8 rotating in a liner 9 having a recess 7 connected by a pipe 6 to the accumulator, and a recess 13 connected by a port 14 to the suction side of the pump. In the position shown, the recess 7 also communicates through a port 10 with the space 23 above the injection valve. As the member 8 rotates, a projection 25 in the recess 7 closes the port 10, and an extension 26 of the recess 13 opens a port 11 to put the space 23 into communication with the pump section. The pressure in the space 27 then opens the valve, and injection continues until the accumulator pressure is reapplied to the space 23. By adjusting the member 8 axially, the duration of injection is timed. Specification 528,042 is referred to.
Patent GB-581558-A (GB)
Title: Improved apparatus for the volumetric measuring of quantities of materials
IPC: G01F13/00
Filed: 1945-04-16
Abstract: 581,558. Delivering measured quantities of solids. AVENIAU, P. April 16, 1945, No. 9476. Convention date, Jan. 10, 1944. [Class 106 (v)] Apparatus for delivering measured quantities of solids comprises a hinged spout mounted below a feed hopper to deflect material into a pivoted feed regulating box; the spout and feed box being raised or lowered in succession by means of cams or the like. Material from the hopper 1, Fig. 1, falls down the spout 2, having a hinged part 3, into the feed box 14 which is hinged at 15 and is provided with a removable tare 16 to vary its volume. When the box is full the spout 3 is raised to cut off the supply, the box being then emptied and returned to its original position, and the hinged spout 3 lowered. These members are controlled by pulley-driven cams 20, 30, Fig. 5, engaging pivoted arms 12, 26 mounted on a casing 13 attached to a girder 11. The arms carry pulleys 7, 25 over which pass cables 5, 23, attached at one end to the girder at 8, and to the casing 13 at 24 respectively, and at their other ends to the spout 3 and box 14.
Patent GB-736047-A (GB)
Title: Improvements in or relating to machines for depositing viscous or plastic materials
IPC: A21C15/00
Filed: 1953-04-08
Abstract: 736,047. Depositing machines for marshmallow, jam &c. MEAGHER, W. D., and MEAGHER, G. April 7, 1954 [April 8, 1953], No: 9483/53. Class 87 (2). [Also in Group VI] In a depositing machine, viscous or plastic material such as marshmallow, jam or fondant, is fed by oppositely rotating rollers 23 into a feed chamber 11 and fills the space between a cylindrical wall 12 and one of a pair of vanes 15 of a rotor 14. The valve member 25 is initially in the position shown in Fig. 1 and the vane 15 drives the material through the orifices 15 and nozzles 18 on to biscuits or cakes carried by a conveyer 19, until it becomes adjacent valve member 25 when the latter rotates to close the orifice 16 to permit vane 15 to pass, opening again immediately for the cycle to be repeated with the other vane. The rotor 14 is integral with a power-driven shaft 30, which has a cam 31, Fig. 4, fixed thereon so that as it rotates, roller 28 mounted on arm 27 follows a peripheral flange 32 on the cam 31, and, on reaching gaps 33 in the flange 32, is rotated by spring 29 to the dotted line position shown in Fig. 4 and closes the delivery orifices 16 by valve member 25 which is attached to the other end of arm 27. In a modification, the valve member 25 may be triangular in shape moving into .a complementary seating. In a further modification, Fig. 6, the valve member 36 is arranged to slide up and down in a rectangular section recess 37 in a block 17 and has a row of holes 39 offset from the delivery orifices 16 so that the latter are closed when the valve member 36 is at the bottom of the recess 37.
Patent GB-295207-A (GB)
Title: Improvements in thermostatic controls for gas burners
IPC: F23N5/06
Filed: 1928-03-29
Abstract: 295,207. Langer, R. March 29, 1928. P i l o t jets. -An automatic thermal device for automatically closing a gas cock 2 on accidental extinction of the flame is applied to the first burner I of a group of four burners I - - IV, and a central constantly burning pilot burner 43 projects a pilot flame into the vicinity of each burner to relight the same in the event of a temporary extinction of the flame. The thermal catch release device 20, 30, 31 applied to the burner I automatically cuts off the gas supply to all if the flame of burner I is extinguished for a longer period. The pilot burner is fed by a pipe 42 and is protected by a domed cover.
Patent GB-659828-A (GB)
Title: Improvements in and relating to pulse amplitude-discriminating circuits
Inventor: COOKE-YARBOROUGH EDMUND HARRY
IPC: H03K9/00
Filed: 1948-04-05
Abstract: 659,828. Pulse discriminating circuits. NATIONAL RESEARCH DEVELOPMENT CORPORATION. April 5, 1948, No. 9531. [Class 40 (vi)] In a pulse amplitude discriminator circuit for classifying pulses into groups according to their amplitude the gain or D.C. level of the preamplifier is controlled according to the difference in the occurrence rates of pulses lying within two adjacent amplitude ranges to maintain the occurrence rates equal. The gain control system may be used in a pulse amplitude discriminator as described in Specifications 659,819 and 659,825, in which the input pulse source is an ionization chamber and is characterized by the feature that the spectrum of occurrence rates of pulses at different amplitude levels presents one or more peaks at which pulses of given amplitudes grouped around a mean amplitude occur much more frequently than pulses of other amplitudes. In the Figure, pulses from two adjacent channels of a pulse amplitude discriminator are fed to inputs 1 and 2 respectively. The number of pulses present in each channel is counted by the ring of five counters 3, 5 or 4, 6, which may be conventional relay or " flip-flop" counters. When the twenty-fifth pulse has been counted on either side relay X or Y is operated and held operated via the hold-on contact x2 or y2. When both relays X and Y have operated relay Z is operated via contacts xl, y1, relays X and Y release and the cycle is repeated. The potential at terminal 10 which provides the required control potential for the pre-amplifier is derived from a resistive potential divider connected across terminals 8 and 9 of a D.C. supply. The total resistance on both sides is equal but although the resistors in any given group UA1 &c. are equal the value of any resistor in groups VA1, VA2, VB1 and VB2 is five times the value of any resistor in groups UA1, UA2, UB1, UB2 and one-fifth the value of resistors W1 or W2. The pulse count in both branches is translated to the resistive potentiometer by the contacts associated with each of the relays in the counter circuit so that when the count in one branch progresses more rapidly than that in the other the potential at terminal 10 changes in the direction necessary to adjust the pre-amplifier gain to restore parity between the two counts. Instead of using the control voltage to stabilize the gain of the pre-amplifier it may alternately be added to the signal voltage applied to the pre-amplifier input to compensate for changes in the D.C. level. Both gain control and D.C. level stabilization may be effected simultaneously using two different peaks in the pulse amplitude occurrence-rate curve. In a further modification the operation of the counting relays in either branch of the counting circuit' may be used to control a mechanical differential which varies a potentiometer controlling the bias of the pre-amplifier.
Patent GB-938526-A (GB)
Title: Improvements in or relating to the cleaning of field products
IPC: A23N12/02
Filed: 1962-03-13
Abstract: 938,526. Cleaning root crops; separating granular materials. ELFA-APPARATE-VERTRIEBS-G.m.b.H. March 13, 1962 [March 21, 1961], No. 9543/62. Class 117. Apparatus for removing stones, sand and the like from root crops carried in a stream of water in a channel 1, has a container 2 beneath the channel formed with at least two chambers 2a and 2b connecting with the channel, one upstream of the other, one covered with a waterpermeable cover, the other open at the top to serve as a drop-shaft for sediment, and means for circulating water to and from the channel 1 via the chambers. The chamber 2a has a pivoted grid 3 where it enters the channel to control the size of the opening whilst the chamber 2b is closed at the top by a roller grid which allows passage of water, but not of the roots &c. The water is circulated in the container by a propeller 7 in a cross channel between the two chambers. A worm 10 carries away the sediment.
Patent GB-655475-A (GB)
Title: Improvements in the absorption of ethylene in mineral acids
IPC: C07C303/24
Filed: 1948-04-06
Abstract: Acid extracts of ethylene are prepared by contacting the ethylene in an absorption zone with a countercurrently flowing stream of a concentrated polybasic mineral acid (92 per cent or higher) and maintaining such a temperature gradient throughout the zone by the aid of internal or external cooling coils that the temperature increases continually in the direction of increasing extract saturation.  The preferred acid is sulphuric acid but other mineral acids or mixtures thereof, e.g. phosphoric acid, may be used.  Thus, ethylene may be fed into the lower portion of an absorption tower and concentrated sulphuric acid into the upper portion and a progressive temperature gradient maintained with a bottom temperature of 90-110 DEG  C. and an upper temperature of 65-70 DEG  C.  A pressure sufficient to ensure an ethylene partial pressure of 150-200 or more p.s.i.g. is generally employed. Fresh acid is added at a rate sufficient to replace the acid extract which is removed from the base of the tower.  To counteract the corrosiveness of the fresh acid, some of the partially saturated acid may be withdrawn from a point midway in the tower and recirculated to the top of the tower.  The acid extract, containing about 1.2 to 1.4 mols. ethylene per mol. of acid, may then be hydrolysed to ethyl alcohol; if desired, prior to hydrolysis the extract may be led to a soaking drum where it is allowed to become enriched in ethylene, e.g. to 1.5 saturation during 1-3 hours.  A suitable ethylene-containing gas for the process comprises 30 per cent or more ethylene and the remainder hydrogen, methane, ethane and a small amount of higher hydrocarbons, e.g. propylene.  Tables are given comparing data from a run using ethylene and sulphuric acid in accordance with the invention with data obtained from similar runs where, however, there is either no such progressive temperature gradient or the gradient increases in the direction of decreasing extract saturation.  The process defined gives a higher alcohol and ether recovery following the hydrolysis. The Specification as open to inspection under Sect. 91 is not limited as regards countercurrent flow and the manner in which the required temperature gradient is maintained; also it specifies the use of mineral acids in general and includes, for this purpose, benzene and toluene sulphonic acids.  This subject-matter does not appear in the Specification as accepted.
Patent GB-101525-A (GB)
Title: Improvements in Clothes Pegs and Clips.
Inventor: HICKS JAMES WILLIAM
IPC: D06F55/00
Filed: 1916-07-07
Abstract: 101,525. Hicks, J. W., Nolan, T. A., and Webb, E. July 7, 1916. Clothes - pegs; clips, spring-wire. - The peg comprises a handle 3 and a clipping-portion with unequal wire loops 12, 16 bent outwards at the ends, as shown in Fig. 4. The ends of the wire mav be passed through the handle and bent over, as shown in Fig. 2. In a modification, the ends of the wire are twisted to form a handle.
Patent GB-631351-A (GB)
Title: Spring clips
IPC: A47G1/14
Filed: 1947-04-10
Abstract: 631,351. Spring clips. JONES, P. April 10, 1947, No. 9618. [Class 44] [Also in Group XIV] A clip for supporting or displaying articles is formed from a length of resilient material and has a spring loop, reverse bends on each side forming feet, substantially parallel limb portions and portions which cross one another and have means at their ends to engage with the article to be supported or with hooks engaging the article. In the form of Fig. 1, the clip ends 6 are provided with hooked links 7, to engage the article 9 at spaced points. The clip ends may be detachably connected with the links or permanently and pivotally attached thereto. The links may each be formed with a kink locating the ends 6 of the clip. In a modification for supporting a table top, a pair of clips engages a pair of elongated links hooked on the sides of the top. In another form the clip is made from a length of tubing 20, Fig. 3, having an insert 21 of resilient material providing the necessary spring. Detachable hook members 23 may be mounted on the ends of the clip by a taper 24 on the resilient insert binding in a socket in the hook part 23.
Patent GB-810050-A (GB)
Title: Aspirin crystallisation
Inventor: HAMER WILLIAM EDWARD
IPC: C07C69/86
Filed: 1956-03-28
Abstract: In a process for the crystallization of aspirin from acetone, after at least 20 per cent of the crystallization has taken place acetone is separated from the crystallizing solution and replaced by an organic solvent in which aspirin is less soluble at the crystallization temperatures employed.  Preferably, the solution is substantially saturated at a temperature within the range 40 DEG  to 57 DEG  C. before crystallization commences, and the acetone is conveniently removed by distillation under reduced pressure. Advantageously, at least a third of the acetone is removed and a substantial part of the crystallization i.e. about 40 per cent, has already taken place, before addition of the replacing solvent, and, preferably, acetone is continually removed during this addition. Preferred replacing solvents are carbon tetrachloride and benzene. Conveniently the total quantity of solvent added about equals in weight the total acetone in the solution before crystallization. Examples illustrate all the preferred embodiments of the invention. Specification 798,633 is referred to.
Patent GB-305404-A (GB)
Title: Improvements relating to compound glass sheets
IPC: B32B17/10
Filed: 1928-03-30
Abstract: 305,404. Watt, J. A. March 30, 1928. No Patent granted (Sealing fee not paid). Compound transparent sheets.- The edges off a compound glass sheet are sealed with a composition of an oxide of lead and glycerine 10 inserted in a groove 8 formed by cutting away some of the intermediate non-brittle sheet of celluloid &c. A rubber strip 9 may be inserted in the groove in addition to the composition to assist the sealing effect.
Patent GB-783779-A (GB)
Title: Plastic-cum-metal beading
IPC: B60R13/00
Filed: 1954-04-02
Abstract: 783,779. Beadings. CLARK, C. W. April 1, 1955 [April 2, 1954], No. 9741/54. Class 20(4) A beading, e.g. for sealing abutting parts of the body of motor cars, consists of a strip of metal coated with a layer of thermoplastic material and bent lengthwise so that the cross-section forms a U with the free ends of the legs of the U close to one another. The beading may be made by rolling thermoplastic strips together with a metal strip, or by extruding thermoplastic material around a metal strip which can be bent on its way through the die. The metal strip may be perforated in the region of the legs of the U, which are concealed when in use, to improve the bond with the plastic material.
Patent GB-116725-A (GB)
Title: Improvements in Filters.
Inventor: RICHARDS DAVID LAWSON
IPC: B01D35/04
Filed: 1918-06-13
Abstract: 116,725. Richards, D. L. June 4, 1917, [Convention date]. Plug cocks.-A plug cock 3 for a filter is so arranged that, when filtered liquid is required, the liquid is passed through the filter, but that when filtering is unnecessary the liquid flows through a by-pass direct to the outlet. The filter is attached to a pipe by a union 1 containing a plug-cock 3 having two passages, one of which 21 communicates directly with the outlet 20, the other, 23, leading to a chamber 6, the bottom of which is formed by a dished filtering-plate 7.
Patent GB-629905-A (GB)
Title: Improved brake disc for aeroplanes and other vehicles
IPC: F16D65/12
Filed: 1947-04-12
Abstract: 629,905. Making compound brake-discs. DUNLOP RUBBER CO., Ltd., and BUTLER, H. J. April 12, 1947, No. 9810. [Classes 83 (i) and 83 (ii)] [Also in Group XXXIV] Casting composite articles.-Brake discs comprise a composite annular plate having a steel core or backing and a facing on one or both sides of graphitic cast iron which may have an outer coating of chromium. An advantage of the discs is reduced distortion by heat. As shown, a steel disc 1 formed with projections 5 to engage corresponding slots in, for instance, a landing wheel for aeroplanes, has integrally bonded thereto on each side, either by casting or the interposition of copper foil and brazing, a disc 3 of graphitic cast iron. Polished chromium friction surfaces are preferably formed on the cast iron layers as by brazing thin chromium discs thereto with the interposition of copper foil. Further to reduce distortion by heat, radial slots may be formed in the steel disc extending alternately from the inner and outer circumferences. The cast iron has a total carbon content of not less than 3 per cent by weight of which not less than 60 per cent is graphite and it may contain other alloying elements such as nickel, chromium and molybdenum. A disc of five layers, is also shown.